A295660 - cp's OEIS frontend

A295660 Binary weight of Euler phi: a(n) = A000120(A000010(n)).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	1
9	2
10	1
11	2
12	1
13	2
14	2
15	1
16	1
17	1
18	2
19	2
20	1
21	2
22	2
23	3
24	1
25	2
26	2
27	2
28	2
29	3
30	1
31	4
32	1
33	2
34	1
35	2
36	2
37	2
38	2
39	2
40	1
41	2
42	2
43	3
44	2
45	2
46	3
47	4
48	1
49	3
50	2
51	1
52	2
53	3
54	2
55	2
56	2
57	2
58	3
59	4
60	1
61	4
62	4
63	2
64	1
65	2
66	2
67	2
68	1
69	3
70	2
71	3
72	2
73	2
74	2
75	2
76	2
77	4
78	2
79	4
80	1
81	4
82	2
83	3
84	2
85	1
86	3
87	3
88	2
89	3
90	2
91	2
92	3
93	4
94	4
95	2
96	1
97	2
98	3
99	4
100	2
101	3
102	1
103	4
104	2
105	2

[1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 2, 2, 1, 1, 1, 2, 2, 1, 2, 2, 3, 1, 2, 2, 2, 2, 3, 1, 4, 1, 2, 1, 2, 2, 2, 2, 2, 1, 2, 2, 3, 2, 2, 3, 4, 1, 3, 2, 1, 2, 3, 2, 2, 2, 2, 3, 4, 1, 4, 4, 2, 1, 2, 2, 2, 1, 3, 2, 3, 2, 2, 2, 2, 2, 4, 2, 4, 1, 4, 2, 3, 2, 1, 3, 3, 2, 3, 2, 2, 3, 4, 4, 2, 1, 2, 3, 4, 2, 3, 1, 4, 2, 2]

cp's OEIS Frontend

A295660 Binary weight of Euler phi: a(n) = A000120(A000010(n)).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	1
9	2
10	1
11	2
12	1
13	2
14	2
15	1
16	1
17	1
18	2
19	2
20	1
21	2
22	2
23	3
24	1
25	2
26	2
27	2
28	2
29	3
30	1
31	4
32	1
33	2
34	1
35	2
36	2
37	2
38	2
39	2
40	1
41	2
42	2
43	3
44	2
45	2
46	3
47	4
48	1
49	3
50	2
51	1
52	2
53	3
54	2
55	2
56	2
57	2
58	3
59	4
60	1
61	4
62	4
63	2
64	1
65	2
66	2
67	2
68	1
69	3
70	2
71	3
72	2
73	2
74	2
75	2
76	2
77	4
78	2
79	4
80	1
81	4
82	2
83	3
84	2
85	1
86	3
87	3
88	2
89	3
90	2
91	2
92	3
93	4
94	4
95	2
96	1
97	2
98	3
99	4
100	2
101	3
102	1
103	4
104	2
105	2

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	1
9	2
10	1
11	2
12	1
13	2
14	2
15	1
16	1
17	1
18	2
19	2
20	1
21	2
22	2
23	3
24	1
25	2
26	2
27	2
28	2
29	3
30	1
31	4
32	1
33	2
34	1
35	2
36	2
37	2
38	2
39	2
40	1
41	2
42	2
43	3
44	2
45	2
46	3
47	4
48	1
49	3
50	2
51	1
52	2
53	3
54	2
55	2
56	2
57	2
58	3
59	4
60	1
61	4
62	4
63	2
64	1
65	2
66	2
67	2
68	1
69	3
70	2
71	3
72	2
73	2
74	2
75	2
76	2
77	4
78	2
79	4
80	1
81	4
82	2
83	3
84	2
85	1
86	3
87	3
88	2
89	3
90	2
91	2
92	3
93	4
94	4
95	2
96	1
97	2
98	3
99	4
100	2
101	3
102	1
103	4
104	2
105	2

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	2
8	1
9	2
10	1
11	2
12	1
13	2
14	2
15	1
16	1
17	1
18	2
19	2
20	1
21	2
22	2
23	3
24	1
25	2
26	2
27	2
28	2
29	3
30	1
31	4
32	1
33	2
34	1
35	2
36	2
37	2
38	2
39	2
40	1
41	2
42	2
43	3
44	2
45	2
46	3
47	4
48	1
49	3
50	2
51	1
52	2
53	3
54	2
55	2
56	2
57	2
58	3
59	4
60	1
61	4
62	4
63	2
64	1
65	2
66	2
67	2
68	1
69	3
70	2
71	3
72	2
73	2
74	2
75	2
76	2
77	4
78	2
79	4
80	1
81	4
82	2
83	3
84	2
85	1
86	3
87	3
88	2
89	3
90	2
91	2
92	3
93	4
94	4
95	2
96	1
97	2
98	3
99	4
100	2
101	3
102	1
103	4
104	2
105	2